Magnetoelectric Effect in the Bidomain Lithium Niobate/Nickel/Metglas Gradient Structure

The paper describes the magnetoelectric (ME) effect in a gradient laminate structure consisting of a LiNbO3/Ni/metglas multilayer based on a bidomain lithium niobate single crystal with a Y + 128° cut. The main purpose of the work is to obtain a self‐biased structure. A theoretical and experimental study is conducted to determine the optimal thickness of the Ni film for creating such a structure. The application of self‐biased structures based on gradient bidomain crystals in ME devices can significantly reduce their weight and dimensions as well as improve their electrical characteristics. The paper describes the magnetoelectric effect in a gradient laminate structure consisting of a bidomain LiNbO3/Ni/metglas multilayer. The bias magnetic field for the bidomain LN/Ni/metglas laminate structure decreases down to 3.5 Oe for the structure with a 860‐nm‐thick Ni film in comparison with the ME composite without Ni layer (4.9 Oe).